The MVS1 module is more like a preset machine: all sounds are ready to go and it not possible to deep edit parameters from direct panel - most functions s can be changes only using an external Midi SYSEX strings generator.

SR-JV80-04 VINTAGE SYNTH board features same sounds. This expansion set is for JV, XV and XP series. The vintage board is also famous to have a dedicated patchset for the module Roland JD-990.
The MVS1 is basically the equivalent of the Srjv-04 vintage with same sounds from classic keyboards and synthesizers (Mellotron, Hammond, Moog) +famous drum machines likeTR-909 or CR-78.

SRX7 ultimate keys contains all waveforms from MVS-1 - for XV and phantoms series